Apparatus for the continuous purification of water.



G. H. KOYL.

APPARATUS FOR THE CONTINUOUS PURIFICATION OF WATER.

I APPLICATION FILED JAN. 3, 191p. 960,959, Patented June '7, 1910.

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CHARLES HERSCHEL KOYL, OF NEW YORK, N. Y.

AIPIPARATUS FOR THE CONTINUOUS PURIFICATION OF WATER.

To all whom it may concern:

Be it known that I, CHARLES HERSCHEL KOYL, a citizen of the United States, residing in New York, in the county and State of New York, have mvented a certain new and useful Improvement 1n Apparatus 'for the Continuous Purification of Water, of which gether through the precipitating chamber to Its bottom, at which there is an exit leading to a settling chamber, up through which the vvl ater rises slowly while the precipitate sett es. tling chamber of practicable size, only the heavier pieces of precipitate settle, and that much of the fine precipitate is carried up through the settling chamber by the current of softened water, and that therefore the water must be filtered to become usable.

To obviate this difliculty, many devices have water must still be filtered. I have discovered that the difiiculty may be overcome by introducing the hard Water and each of the reagents separately at the bottom of the precipitatinfg chamber, and compelling the mixture to W upward through this chamber instead of downward as in ordinary practice. -By means of this devicethe water of the precipitating chamber becomes loaded with old precipitate, thepieces of which grow constantly larger by continuous accretions, as a snowball grows by rolling, and which. gather to themselves all the fine particles of precipitate as they are. formed; so that, in the end, when the water of the precipitating chamber can hold no more in suspension and these pieces are carried over into the settling chamber. they settle very rapidly and leave the water at the top of the settling chamber so perfectly clear that no filter is needed, and the water be used Specification of Letters Patent; Application filed January 3, 1910. Serial No. 535,915.

But it has been found that in a. set-- Patented June "3, 1910.

at once for drinking or other purposes. By carrying the raw water and the dissolved reagents separately to the lower part of the precipitating tank where they meet for the first time and begin their reactions in the presence of the old precipitate, the latter is caused to meet the new precipitate at the moment of its birth, or in nascent condition, and maximum agglomerating effect is obtained. It is this feature which characterize's my invention. Iprefer to continuously stir the water of the precipitating tank, be

cause it insures not only the thorough mix ing of the reagents with the water, but also the thorough rubbing of the fine particles of precipitate against the large pleces which act as agglomerators.

It is evident that the pipes which conduct separately the raw water and reagent or reagents to the bottom of the precipitating tank may come down either outside or inslde aid tank so long as the liquids meet for the first time and begin their reactions at or near the bottom of the precipitating tank and proceed thence upward to the outlet near the top of said tank.

The apparatus will of course be fitted with the 'usual equipment of water wheel, lime tank, reagent boxes or tanks etc.

' The settling tank can be superposed upon the precipitating tank, or can surround the same, or the two can be placed side by side according to circumstances or as desired.v

In the accompanying drawing I have represented a form of apparatus embodying my improvement in which the settling tank surrounds the precipitating tank.-

The figure is a vertical central section of the apparatus.

L is the lime tank, T is the precipitating tank, S is the settlin tank, B is the lime reservoir, B is the so a reservoir.

W is the waterwheel, W is the water wheel box, I is the raw water intake, C is the raw Water chute from box W to lime tank, C is the raw water chute to precipitating tank, P is ipe from chute G to bottom of lime tank, P is pipe from lime box B into lime tank.

V and V are valves regulating the raw water and soda supply respectively; the for tank and G is the gearing by which it is driven from the water wheel.

1 is the pipe which leads lime water from the lime tank to the bottom of the precipitating tank T.

water from the top of the precipitating tank to the settling tank.

' A filter may of course be used in connection with the settling tank if desired, but as hereinbefore-indicated, it would be rather a'nicety than a necessity. -Such precipitateas may be carried over from the precipitating tank into the settling tank, is in comparatively large pieces, which settle very rapidly.

Obviously the structural details of the apparatus may vary considerably; what is essential, whatever reagent or reagents be to the bottom of the eeopsi employed, being that the reactions shall begin in the lower part of the precipitating tank in the presence of the old preci itate.

What I claim therefore, and esire to secure by Letters Patent, is In apparatus for the continuous/purification of water, a precipitating t nk in which the raw water is treated and th precipitates resulting from that treatment are formed, a settling tank, an outlet at the upper end of the precipitating tank communicating with the inlet of the settling tank, and inlets at the lower end of the precipitating tank communicating through separate duets with the sources of raw water and reagent supplies respectively, substantially as and for the purpose hereinbefore set forth. In testimony whereof I afix my signature 1n presence of two witnesses.

CHARLES HERSOHEL KOYL.

Witnesses: I. A. BERG,

Hnnsonnn A. HUNTER. 

